What made the difference between last November's election defeat and last week's voter approval for Colorado Springs School District 11? "The community effort," answers Friends of D-11 campaign manager Anthony Carlson. There's no doubt about it, he said. The numbers back it up. More than 500 volunteers knocked on 40,000 doors and made 50,000 phone calls to urge voters to support a $42 million mill levy override, or property tax increase.